In Swift, how do I know if words are wrapped in an UILabel

Question

In Swift, I wonder if there is a way to get whether or not a word is wrapped. For example, I have an UILabel.

let label = UILabel()
label.text = "Hey! Hello World!"
label.areWordsWrapped()

If text is displaying like this:

Hey! Hell
o World!

//label.areWordsWrapped() should return true

if this:

Hey! Hello
World!

//label.areWordsWrapped() should return false

Is there a function or property to achieve that?

Answer 1

You can try this, it may not perfect

extension UILabel {
func areWordsWrapped()->Bool {
    let fontAttributes: [NSAttributedString.Key : Any] = [NSAttributedString.Key.font: self.font!]
    let splitText: [String] = self.text!.split {$0 == " "}.map(String.init)
    for text in splitText {
        let width = text.size(withAttributes: fontAttributes).width
        if width > self.frame.width {
            return true
        }
    }
    return false
}
}

edit:

it will be fail if you change the line break to character wrap

if use default line break it will be fine

if you use character wrap I think it almost certain it will be wrapped, because it almost impossible to have same width in every line without enter/new line